<?php echo ''
. '<table border=1 cellspacing=0 width=400 height=300>'
        . '<tr>
               <td>1</td>
               <td>2</td>
               <td>3</td>
               <td>4</td> 
           </tr>
           <tr>
               <td>2</td>
               <td></td>
               <td></td>
               <td></td>
           </tr>
           <tr>
               <td>3</td>
               <td></td>
               <td></td>
               <td></td>
           </tr>
           <tr>
               <td>4</td>
               <td></td>
               <td></td>
               <td></td>
           </tr>
    </table>
' ?>
<?php echo '<html>
<head>
<meta charset="utf-8">
<title>zd(runoob.com)</title>
</head>
<body>
 
<form action="welcome.php" method="post">
名字: <input type="text" name="fname">
年龄: <input type="text" name="age">
<input type="submit" value="提交">
</form>
 
</body>
</html>' ?>
<?php echo '<form action="/" method="post">
    <!-- 文本输入框 -->
    <label for="name">用户名:</label>
    <input type="text" id="name" name="name" required>

    <br>

    <!-- 密码输入框 -->
    <label for="password">密码:</label>
    <input type="password" id="password" name="password" required>

    <br>

    <!-- 单选按钮 -->
    <label>性别:</label>
    <input type="radio" id="male" name="gender" value="male" checked>
    <label for="male">男</label>
    <input type="radio" id="female" name="gender" value="female">
    <label for="female">女</label>

    <br>

    <!-- 复选框 -->
    <input type="checkbox" id="subscribe" name="subscribe" checked>
    <label for="subscribe">订阅推送信息</label>

    <br>

    <!-- 下拉列表 -->
    <label for="country">国家:</label>
    <select id="country" name="country">
        <option value="cn">CN</option>
        <option value="usa">USA</option>
        <option value="uk">UK</option>
    </select>

    <br>

    <!-- 提交按钮 -->
    <input type="submit" value="提交">
</form>' ?>
<?php echo '<img src="images/3.png">' ?>
<?php echo '<video loop="loop" controls="controls"><source src="images/2.mp4" type="video/mp4"></source></video>' ?>
